1.Identification and Characterization of the Causal Organism of Gummy Stem Blight in the Muskmelon (Cucumis melo L.).
In Young CHOI ; Jang Nam CHOI ; Dong Chil CHOI ; Praveen Kumar SHARMA ; Wang Hyu LEE
Mycobiology 2010;38(3):166-170
Gummy stem blight is a major foliar disease of muskmelon (Cucumis melo L.). In this study, morphological characteristics and rDNA internal transcribed spacer (ITS) sequences were analyzed to identify the causal organism of this disease. Morphological examination of the Jeonbuk isolate revealed that the percentage of monoseptal conidia ranged from 0% to 10%, and the average length x width of the conidia was 70 (+/- 0.96) x 32.0 (+/- 0.15) microm on potato dextrose agar. The BLAST analysis showed nucleotide gaps of 1/494, 2/492, and 1/478 with identities of 485/492 (98%), 492/494 (99%), 491/494 (99%), and 476/478 (99%). The similarity in sequence identity between the rDNA ITS region of the Jeonbuk isolate and other Didymella bryoniae from BLAST searches of GenBank was 100% and was 95.0% within the group. Nucleotide sequences of the rDNA ITS region from pure culture ranged from 98.2% to 99.8%. Phylogenetic analysis with related species of D. bryoniae revealed that D. bryoniae is a monophyletic group distinguishable from other Didymella spp., including Ascochyta pinodes, Mycosphaerella pinodes, M. zeae-maydis, D. pinodes, D. applanata, D. exigua, D. rabiei, D. lentis, D. fabae, and D. vitalbina. Phylogenetic analysis, based on rDNA ITS sequence, clearly distinguished D. bryoniae and Didymella spp. from the 10 other species studied. This study identified the Jeonbuk isolate to be D. bryoniae.
Agar
;
Base Sequence
;
Bryonia
;
Databases, Nucleic Acid
;
DNA, Ribosomal
;
Glucose
;
Solanum tuberosum
;
Spores, Fungal
2.Isolation and Identification of Mushroom Pathogens from Agrocybe aegerita.
In Young CHOI ; Jang Nam CHOI ; Praveen K SHARMA ; Wang Hyu LEE
Mycobiology 2010;38(4):310-315
Agrocybe aegerita is an important mushroom cultivated in Korea, with good feel and a peculiar fragrance. A. aegerita can be cultivated throughout the year using culture bottles but is more susceptible to contamination than other mushrooms. Twenty-two pathogens were isolated from the fruiting bodies and compost of A. aegerita, and seven isolates were isolated from Pleurotus ostreatus to compare with the A. aegerita isolates, collected from Gimje, Iksan, Gunsan of Chonbuk, and Chilgok of Gyeongbuk Province in 2009. These isolates were identified based on morphological and molecular characteristics. Of the 29 isolates, 26 were identified as Trichoderma spp. and the remaining three were Aspergillus spp., Mucor spp., and Penicillium spp. A phylogenetic analysis revealed that the 26 isolates of Trichoderma were divided into four taxa, namely T. harzianum, T. pleuroticola, T. longibrachiatum, and T. atroviride. Among the Trichoderma spp., 16 isolates (55.2%) were identified as T. harzianum, six as T. pleuroticola (20.7%), two as T. longibrachiatum, and the remaining two were T. atroviride.
Agaricales
;
Agrocybe
;
Aspergillus
;
Fruit
;
Korea
;
Mucor
;
Penicillium
;
Pleurotus
;
Soil
;
Trichoderma
3.A Child with Familial Hypophosphatemic Ricket: A case report.
Eun Seok CHOI ; Sae Yoon KANG ; Yeon Soo LEE ; Jang Hyu CHOI
Journal of the Korean Academy of Rehabilitation Medicine 1997;21(3):623-
Familial hypophosphatemic ricket (Vitamin D-resistant ricket), first described by Albright in 1937, has been known to be transmitted as an X-linked dominant trait in most families. Children with this disease would show growth retardation with characteristic clinical features such as congenital alopecia, genu varum or genu valgum, coxa vara and waddling gait. Although the physical features associated with this disease have been documented frequently, the potential involvement of auditory pathway due to abnormal bone formation in skull has not been explored frequently. We report a twenty six-month-old female child with familial hypophosphatemic ricket who presented abnormal findings of brainstem auditory evoked potential study. The impaired hearing function should be alerted as one of possible accompanying disabilities of the disease.
Alopecia
;
Auditory Pathways
;
Child*
;
Coxa Vara
;
Evoked Potentials, Auditory, Brain Stem
;
Female
;
Gait
;
Genu Valgum
;
Genu Varum
;
Hearing
;
Humans
;
Osteogenesis
;
Rickets, Hypophosphatemic*
;
Skull
4.Pendulum Test Using Video-Based Two Dimensional Motion Analysis Program.
Seung Han YANG ; Eun Seok CHOI ; No Kyoung PARK ; Min Ki KIM ; Jang Hyu CHOI
Journal of the Korean Academy of Rehabilitation Medicine 1997;21(5):942-949
The pendulum test, recognized as a reliable measure of spasticity, has been replaced in this study by a video-based two dimensional motion analysis system. Using twenty five patients with spasticity(21 males, 4 females; mean age 46.6 year-old) in their lower legs due to lesions affecting the central nervous system and twenty two persons without any evidence of hypertonia(all males; mean age 23.4 year-old), five parameters such as relaxation index(RI), amplitude ratio(AR), torque at maximal acceleration velocity, number of swing and swing time were obtained for the purpose of documenting the reliability of the video-based two dimensional motion analysis system for the evaluation of spasticity. The values of RI(P<0.05), AR(P<0.01), and swing time(P<0.05) in patients with spasticity were significantly lower than control, whereas the value of torque in patients was significantly higher than control(P<0.01). Spearman's correlation coefficients of the RI(r=+/-0.70894, P<0.001), AR(r=+/-0.71832, P<0.001), number of swing(r=+/-0.59037, P<0.05) and swing time(r=+/-0.59648, P<0.01) showed a statistically significant negative correlation with the modified Ashworth scale, whereas that of torque(r=0.59037, P<0.01) showed a significant positive correlation. In conclusion, a pendulum test using a video-based two dimensional motion analysis system is a simple, and a reliable method for the quantitative evaluation of spasticity.
Acceleration
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Central Nervous System
;
Evaluation Studies as Topic
;
Female
;
Humans
;
Leg
;
Male
;
Muscle Spasticity
;
Relaxation
;
Torque
5.Spontaneous Flexor Tendon Rupture of the Burned Hand.
Do Hyun KWON ; Jong Wook LEE ; Jang Hyu KOH ; Dong Kook SEO ; Jai Ku CHOI ; Young Chul JANG
Journal of Korean Burn Society 2010;13(1):48-51
PURPOSE: Spontaneous tendon rupture of finger is defined the rupture of tendon without any intrinsic or extrinsic pathological processes in finger. Spontaneous flexor tendon ruptures are rare. Burn affects not only skin but also muscle and tendon according to the depth. Particularly, burn in hand badly affects movement of finger. Thus, We report the case of spontaneous flexor tendon rupture of finger that happened after burn. METHODS: We studied a 42 year old male presented with third degree electrical burn at the palm of the right hand. And then, Terudermis(R) was applied on 23rd day after burn and split thickness skin graft was applied on 37th day after burn. After operation, there were no special symptoms for some period. But, on 74th day after burn, while providing physical therapy to finger, he could not flex his thumb of the hand with popping sound and edema. So we performed US and MRI scan, finally diagnosed complete tear on FPL tendon of the right hand which was in flexor tendon injury zone IV. We harvested donor from Palmaris longus and tendon graft was applied. RESULTS: After operation, graft was well taken without other problem. And after applying splint, 4th day after tendon graft, active finger extension was done with passive flexion achieved using a rubber band attached to the finger tip. 4 weeks after the operation, splint was removed and the patient gently started active exercise. CONCLUSION: Spontaneous rupture of flexor tendon is rare and moreover, there was no case report of rupture after burns so far. We are now reporting that we early diagnosed the spontaneous flexor tendon rupture of the burned hand and functionally corrected by tendon graft.
Burns
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Edema
;
Fingers
;
Hand
;
Humans
;
Magnetic Resonance Imaging
;
Male
;
Muscles
;
Pathologic Processes
;
Rubber
;
Rupture
;
Rupture, Spontaneous
;
Skin
;
Splints
;
Tendon Injuries
;
Tendons
;
Thumb
;
Tissue Donors
;
Transplants
6.Cases of Chemical Burn by Aesthetic Phenol Peel.
Ka Ram KIM ; Jai Koo CHOI ; Jang Hyu KOH ; Dong Kook SEO ; Jong Wook LEE ; Young Chul JANG
Journal of Korean Burn Society 2010;13(1):45-47
PURPOSE: Recently there are upgrowing public interest of cosmetics and anti-aging and also public request of chemical peel and its complications. It is a strong chemical agent and can occur severe chemical burn. METHODS: This research surveyed from August 2008 to March 2010 by 3 patients who had gotten chemical burn by phenol peel. We investigated age, sex, site, size and treatment. RESULTS: The average age of cases was 43 years old. They were all female. Damaged area was all on face. Wound size was 3.3% in average. Wound depth was deep second degree in 2 cases and mid second degree in 1 case. In one case, ectropion on both lower eyelids was occurred by scar contracture. We did release and thick split thickness skin graft to resolve ectropion. To other milder cases, we managed conservatively. CONCLUSION: People who had gotten chemical burn by phenol therapy didn't get proper therapy instantly. We suggest that phenol peel must be performed very carefully and by professional and experienced surgeon.
Burns, Chemical
;
Cicatrix
;
Contracture
;
Cosmetics
;
Ectropion
;
Eyelids
;
Female
;
Humans
;
Phenol
;
Skin
;
Transplants
7.Proposed Treatment Protocol for Frostbite: A Retrospective Analysis of 17 Cases Based on a 3-Year Single-Institution Experience.
Eun Kyung WOO ; Jong Wook LEE ; Gi Yeun HUR ; Jang Hyu KOH ; Dong Kook SEO ; Jai Ku CHOI ; Young Chul JANG
Archives of Plastic Surgery 2013;40(5):510-516
BACKGROUND: This paper discusses the treatment protocol for patients with frostbite. METHODS: We performed a retrospective analysis of a series of 17 patients with second- and higher-degree frostbite who had been treated at our medical institution between 2010 and 2012. RESULTS: Our clinical series of patients (n=17) included 13 men and four women, whose mean age was 42.4+/-11.6 years (range, 22-67 years). The sites of injury include the foot in six patients (35.3%), the hand in six patients (35.3%) and the facial region in five patients (29.4%). Seven patients with second-degree frostbite were completely cured with only conservative treatment during a mean period of 12.7+/-3.3 days (range, 8-16 days). Of the five patients with third-degree frostbite, two underwent skin grafting following debridement, and the remaining three achieved a complete cure with conservative treatment during a mean period of 35+/-4.3 days (range, 29-39 days). Five patients with fourth-degree frostbite were treated with surgical procedures including amputation. CONCLUSIONS: With the appropriate conservative management in the early stage of onset, surgeons should decide on surgery after waiting for a sufficient period of time until the demarcation of the wound. Continuous management of patients is also needed to achieve functional recovery after a complete cure has been achieved. This should also be accompanied by patient education for the avoidance of re-exposure to cold environments.
Clinical Protocols
;
Cold Temperature
;
Debridement
;
Female
;
Foot
;
Frostbite
;
Hand
;
Humans
;
Male
;
Patient Education as Topic
;
Retrospective Studies
;
Skin Transplantation
;
Surgical Procedures, Operative
8.Surgical Treatment of Recalcitrant Wart.
Ka Ram KIM ; Jai Koo CHOI ; Gi Yeun HUR ; Jang Hyu KO ; Dong Kook SEO ; Jong Wook LEE ; Young Chul JANG
Journal of the Korean Society of Plastic and Reconstructive Surgeons 2011;38(6):798-802
PURPOSE: A wart is caused by epidermal infection with the human papilloma virus. Although wart naturally disappears in some cases, it require treatment because of pain, aesthetic problem, and the possibility of malignant change. Conventional non-surgical treatment cannot be a fundamental solution for the pain and has such disadvantages as frequent recurrence and difficulties in achieving a satisfactory outcome. A surgical procedure was performed on patients with wart and the procedure had a good outcome. METHODS: We investigated the gender, age, lesion site, mean treatment duration, and presence or absence of recurrence in 21 patients with a wart within the period of January 2007 to July 2011. For local lesions, primary closure, including subcuticular suture after the excision, was performed. If the defect size was too big to do primary closure, we performed rotation flap. For wide multiple lesions, a split thickness skin graft was performed. RESULTS: Among the 21 patients, 12 patients were male and 9 patients were female, and their mean age was 42 years(SD=17.38, range: 11~75 years). The lesion site was the foot in 10 patients, the hand in 8 patients, the face in 2 patients, and the scalp in 1 patient. The mean treatment duration was 13.5 days(SD=4.36, range: 6~15 days) for the primary closure or rotation flap, and 18.5 days(SD=2.12, range: 17~20 days) for the skin graft. 20 patients were cured without recurrence. No recurrence was observed in the patients who underwent primary closure or rotation flap. One of the two patients who underwent a skin graft of their wart that had covered their entire palm had local recurrence in part of her finger tips. CONCLUSION: We performed surgical procedure on recalcitrant wart. As a results, we can treat it with short treatment duration, low recurrence rate and less scarring and get high patient satisfaction.
Cicatrix
;
Female
;
Fingers
;
Foot
;
Hand
;
Humans
;
Male
;
Papilloma
;
Patient Satisfaction
;
Recurrence
;
Scalp
;
Skin
;
Sutures
;
Transplants
;
Viruses
;
Warts
9.Algorithm for Primary Full-thickness Skin Grafting in Pediatric Hand Burns.
Yang Seo PARK ; Jong Wook LEE ; Gi Yeun HUH ; Jang Hyu KOH ; Dong Kook SEO ; Jai Koo CHOI ; Young Chul JANG
Archives of Plastic Surgery 2012;39(5):483-488
BACKGROUND: Pediatric hand burns are a difficult problem because they lead to serious hand deformities with functional impairment due to rapid growth during childhood. Therefore, adequate management is required beginning in the acute stage. Our study aims to establish surgical guidelines for a primary full-thickness skin graft (FTSG) in pediatric hand burns, based on long-term observation periods and existing studies. METHODS: From January 2000 to May 2011, 210 patients underwent primary FTSG. We retrospectively studied the clinical course and treatment outcomes based on the patients' medical records. The patients' demographics, age, sex, injury site of the fingers, presence of web space involvement, the incidence of postoperative late deformities, and the duration of revision were critically analyzed. RESULTS: The mean age of the patients was 24.4 months (range, 8 to 94 months), consisting of 141 males and 69 females. The overall observation period was 6.9 years (range, 1 to 11 years) on average. At the time of the burn, 56 cases were to a single finger, 73 to two fingers, 45 to three fingers, and 22 to more than three. Among these cases, 70 were burns that included a web space (33.3%). During the observation, 25 cases underwent corrective operations with an average period of 40.6 months. CONCLUSIONS: In the volar area, primary full-thickness skin grafting can be a good indication for an isolated injured finger, excluding the web spaces, and injuries of less than three fingers including the web spaces. Also, in the dorsal area, full-thickness skin grafting can be a good indication. However, if the donor site is insufficient and the wound is large, split-thickness skin grafting can be considered.
Burns
;
Child, Preschool
;
Congenital Abnormalities
;
Demography
;
Female
;
Fingers
;
Hand
;
Hand Deformities
;
Humans
;
Incidence
;
Male
;
Medical Records
;
Retrospective Studies
;
Skin
;
Skin Transplantation
;
Tissue Donors
;
Transplants
10.Prevalence of Occupational Asthma and Exposure Level of Pharmaceutical Dust of Workers in a Pharmaceutical Company.
Sung Soo OH ; Yong Hyu CHOI ; Eun A KIM ; Young Mok LEE ; Jae Kil JANG ; Jang Jin YOO ; Seung Hyun PARK ; Soo Young JUNG ; Tae Kyun KIM ; Kyoo Sang KIM ; Seong Kyu KANG
Korean Journal of Occupational and Environmental Medicine 2006;18(2):94-102
OBJECTIVES: After the investigation of one worker with occupational asthma, we surveyed the prevalence of occupational asthma and the exposure level of pharmaceutical dust of 32 workers in a pharmaceutical company. METHODS: Thirty-two of the 90 employees participated in the survey which consisted of questionnaire, blood sampling, spirometry and skin prick tests with 8 common allergens as well as 9 antibiotics and 2 enzymes. Various indices of the working environment were also measured. Subjects who had a symptom suggestive of work-related asthma or positive skin prick test were further investigated by PC20 methacholine. Nine subjects who had a PC20 result of 16 mg/ml or less (n=7) or had work-related symptoms and positive skin prick test (n=2) were referred to undergo a specific bronchial provocation test to pharmaceutical dust in an academic allergic disease center. RESULTS: Eleven of 32 workers (34.4%) had a work-related symptom suggestive of occupational asthma. Ten (31.2%) showed positive skin prick test. 8 (25.0%) had a PC20 result of 16 mg/ml or less (indicative of significant bronchial hyperresponsiveness), and 5 (15.6%) had a positive result on the specific bronchial provocation test. Exposure levels of stuffing, input of raw materials and screening process were relatively high. CONCLUSIONS: This survey showed that pharmaceutical workers have an increased risk of occupational asthma. Although pharmaceutical factories maintain a relatively good working environment, careful control of respiratory tract exposures, especially during stuffing, input of raw materials and screening process, is important to prevent occupational asthma. Pharmaceutical workers need to undergo regular skin prick and methacholine bronchial provocation tests, as well as asthmatic symptom survey, to ensure the early detection and prevention of occupational asthma.
Allergens
;
Anti-Bacterial Agents
;
Asthma
;
Asthma, Occupational*
;
Bronchial Provocation Tests
;
Dust*
;
Mass Screening
;
Methacholine Chloride
;
Prevalence*
;
Questionnaires
;
Respiratory System
;
Skin
;
Spirometry